Résumé Nous présentons des solutions algorithmiques pour deux problèmes liés à l’interférence de réseau sans fil. D’abord on propose de ordonnancer les liens d’un ensemble de routes données en vertu de l’hypothèse d’un modèle à fort trafic. Nous considérons un protocole TDMA qu’offre une source d’intervalles de temps synchronisés et cherchent à ordonnancer les itinéraires des liens afin de maxi...

Incorporating overturned waves and multiples in seismic imaging is one of the most plausible means by which imaging results might be improved, particularly in regions of complex subsurface structure such as salt bodies. Existing migration methods, such as Reverse Time Migration, are usually designed to image solely with primaries, and so do not make full use of energy propagating along other wa...

Three multiple attenuation techniques are tested on a Gulf of Mexico dataset. These methods are (1) a hyperbolic Radon transform followed by a mute (2), the Delft approach and (3), a pattern-based technique. The Radon transform separates multiples and primaries according to their moveout. The Delft approach models the multiples and subtracts them by estimating adaptive filters. The pattern-base...